Fuel oil burner lead control mechanism

ABSTRACT

Positioning apparatus comprising a bell crank lever for providing a mechanical advantage to move an igniter tip on an oil burner inwardly and outwardly with respect to the location of a boiler. Slotted positioning and supporting guide rods having a wing-nut locking mechanism for locking the igniter tip in place when positioned. Support brackets connect the crank lever to an oil feed system that is rigidly connected to the guide rods and igniter tip for simultaneous movement of the brackets, lever feed system and igniter tip, with the guide rods indicating the position of the igniter tip.

United States Patent [191 Mayfield et a1.

[451 Jan. 29, 1974 [54] FUEL 01L BURNER LEAD CONTROL 2,669,296 2/1954Stillman et a1 431/186 X MECHANISM [76] Inventors: Robert W. Mayfield,530 Primary Examiner-Edward v Longbotham Dr Aston, 19014; Attorney,Agent, or Firm-R. S. Sclascla; Henry Han- Lawrence T. Mayfield, 218 sen;Arthur M061 Sherbrook Blvd., Upper Darby, Pa. 19082 57 ABSTRACT [22]Filed: 1972 Positioning apparatus comprising a bell crank lever for [21]Appl. No.: 310,296 providing a mechanical advantage to move an ignitertip on an oil burner inwardly and outwardly with respect to the locationof a boiler. Slotted positioning ..431/186l,24;c1/51/3g and supportingguide rods having a wingmut locking [58] .ld "251/186 189 mechanism forlocking the igniter tip in place when o earc positioned. Supportbrackets connect the crank lever to an oil feed system that is rigidlyconnected to the [56] Reterences cued guide rods and igniter tip forsimultaneous movement UNITED STATES PATENTS of the brackets, lever feedsystem and igniter tip, with 2,831,535 4/1958- Lange 431/186 the guiderods indicating the position of the igniter tip. 2,119,952 6/1938 Engels431/189 X 2,382,483 8/1945 Holden 431/186 X 8 Claims, 1 Drawing Figure 338 37 2O 63 EL 58 54 AIR 62 FLOW 56 61 *BOILER FUELOIIL BURNER- LEADCONTROL MECHANISM STATEMENT OF GOVERNMENT INTEREST The inventiondescribed herein may be manufactured and used by or for the Governmentof the United States of America for governmental purposes without thepayment of royalties thereon or therefor.

BACKGROUND OF THE INVENTION This invention generally relates to aprotective system for igniter tips in a fuel oil burner system and moreparticularly to a system for the withdrawal and insertion of anignitertip that can be operated depending on the operational status ofthe oil burner system at that time.

In prior art systems, plurality of igniter tips placed in a boilersystem supply heat to the boiler and are prevented from burning out by aventilation system that supplies air individually to remove heat fromeach igniter tip. When an igniter tip is not in use, its respectiveventilation system is shut down and air doors are closed to prevent lossof heat from other burners so that the end of the igniter tip not in useis in an area of very high ambient temperature. Over extended periods oftime, this often causes extended damage to the igniter tip,necessitating its replacement with the accompanying drawback of not onlythe cost of replacing the individual igniter tip but the entire boilerbeing out of use for a period of time. In maritime use, when a ship isat sea, this can mean running the boiler over an extended period of timeat less than optimum conditions until the ship is brought in forrepairs.

SUMMARY OF THE INVENTION It is therefore a general object of the presentinvention to provide a system for preventing damage to igniter tips. Itis a further object to provide a system for removal of igniter tips fromhigh ambient temperature areas. Another object is in providing optimumpositioning of igniter tips both when in use and when out of use.

This is accomplished in accordance with the present invention byproviding a positioning system with a plurality of interconnectingcomponents having a mechanical advantage for locating an igniter tip ata first optimum position for providing heat to aboiler when the tip isin use, and at a second optimum position when the system is not in use.This permits optimum use of the boiler by using only the igniter tipsrequired at any particular time and not being forced to use an ignitertip merely to prevent its damage.

BRIEF DESCRIPTION OF THE DRAWING The FIGURE is a partial sectional sideelevation view of a burner assembly in accordance with the present invention.

DESCRIPTION OF THE PREFERRED EMBODIMENT Referring now to the FIGURE.there is shown a furnace wall 10 that may be made of brick with anopening 11. A tubular shaped housing 12 abuts wall 10. An igniter tip 14is located inside vanes 16 that are arranged in a conical shaping withthe igniter tip axially displaced from the apex of the cone.

Air doors 20 control the flow of air from a source (not shown). The airdoors 20 along with vanes 16 con trol the supply of air to the ignitertip 14. In addition, the air provides temperature control throughout thearea of its circulation. Additional vanes (not shown) can be placed inthe opening 11 for further control of air flow if required.

The air doors 20 are operated by gears 21 connected to a pin 22 at theend of each door 20. A gear 23 connected to cylindrical sleeve 25 drivesthe gears 21 to position air doors 20 for control of air flow. A gear 31on. sleeve 25 meshes with a gear 30 on rod 33 that enables the air doors21 to. be positioned by a handle 29 with a position indicator 32. Theair doors are manipulated by handle 29, through rod 33, gears 30 and 31,sleeve 25, gears 23 and 21 and pin 22. In addition, sleeve 25 providescontact with tubular piece 36 on bearing surfaces between the respectivepieces.

The air doors 20 are positioned in relationship to housing 12 by meansof register rings 37 secured to air doors 20 by means of hex headedbolts 38.

The tubular piece 36 having both inner and outer bearing surfaces ismounted on door 41 by means of bolts or welding. A barrel piece thatpermits flow of oil through its center in an axial direction issupported by piece 36 on bearing surfaces and is capable of longitudinal movement in relationship to piece 36.

A valve body 42 receives oil through flexible tubing 43 with flexibletubing 44 the return line in a return flow system. A lever 45 controlsthe flow of oil through valve body 42. An atomizer body 47 is secured tovalve body 42 by means of screw assembly 48 and coupling yoke 49. Acollar 50 is held abutting a section of valve body 42 by spring 51.Guide rods 52 secured to valve body 42and door 41 have positionindicators to show the position of the igniter tip 14 on movement ofbarrel piece 42. Wing nuts 53 are used to lock the tips 14 in a fixedposition. Stops are used to limit travel. A bell crank lever 54 is usedto move barrel piece 40 for the positioning of igniter tip 14. A supportbracket 55 is secured to crank lever 54 by means of bolt and hex headnut 61 and is welded to an upper portion of valve body 42. A bar 56connects the fulcrum of lever 54 by means of bolt and nut 62. A support58 welded to door 41 is secured to bar 56 by means of bolt 63. Wall 59abuts door 41 when door 41 is in the closed position. Lever 54 iscapable of rotational movement at its fulcrum connecting with bar 56 andat its connection with support bracket 55. Bar 56 is capable ofrotational movement at its connection with support 58. In this manner,when lever 54 is moved from one position to another, the barrel piece 40may slide easily in its axial direction.

In operation, there are normally a plurality of burner units associatedwith each boiler. This often leads to less than all burner units beingin operation at the same time. The optimum position of igniter tip 14differs depending on whether or not it is in use. When in use, it issupplied with air through air doors 20 and vanes 16 and is forwardlypositioned with relationship .to the boiler. When not in use, the airsupply is terminated for optimum operation of the burners in use and itbecomes essential to retract the igniter tip 14 to prevent damage fromburn-out, coking, etc. In this particular burner, the retraction isnormally about 3 inches.

The igniter tip 14 when operating is positioned a predetermined distancefrom' wall 10 and the boiler for optimum operation. When the igniter tip14 is taken out of service, it may be retracted by pushing forward onbell crank lever 54 which permits retraction of igniter tip 14 andassociated components. The igniter tips may again be moved forward bypulling back on lever 11. The wing nuts 53 on guide rods 52 can providepositional locking as explained previously.

There has therefore been described a means of positioning the ignitertip 14 on a burner from outside the wall 59 of a burner to permit easeof movement of the tip 14 while the door 41 is closed. This necessitatesmovement of oil lines 43 and 44, valve body 42, atomizer body 47, screwassembly 48, coupling yoke 49, co]- lar 50, spring 51, guide sleeve 71,wing nuts 53, lever 45, barrel piece 40 and vanes 16, as well as ignitertip 14. All such components are mounted on door 41 for easyaccessibility when not in use.

It will be understood that various changes in the details, materials,steps and arrangement of parts, which have been herein described andillustrated in order to explain the nature of the invention, may be madeby those skilled in the art within the principle and scope of theinvention as expressed in the appended claims.

What is claimed is: v

1. An oil burner positioning apparatus comprising:

an igniter tip;

a barrel piece connected to said igniter tip;

an oil feed system connected to said barrel piece;

a bell crank lever linkage mechanism connected to said oil feed systemfor moving said igniter tip, said barrel piece and said oil feed systemalong the axial direction of said barre] piece;

a tubular piece having said barrel piece slidably mounted within; and

a fireproof door having an opening with said tubular piece mountedwithin said opening;

wherein said bell crank lever mechanism further includes a bell cranklever having an end connected to said oil feed system;

a bar having a first and second end with said first end connected to thefulcrum of said bell crank lever; and

a support connected to the second end of said bar and said fireproofdoor. 2. An oil burner positioning apparatus according to claim 1wherein said bar is rotatably connected ,to both the fulcrum of saidbell crank lever and said support.

3. An oil burner positioning apparatus according to claim 2 wherein saidend of said bell crank lever is rotatably attached to said oil feedsystem.

4. An oil burner positioning apparatus according to claim 3 wherein saidsupport is rigidly connected to said fireproof door.

5. An oil burner positioning system according to claim 4 furthercomprising:

a pair of guide rods having their axial directions parallel to saidbarrel piece slidably connected to a pair of sleeves on said oil feedsystem and rigidly connected to said door, said guide rods havingindicating marks to show the location of said igniter tip.

6. An oil burner positioning system according to claim 5 furthercomprising:

a pair of wing nuts connected to said sleeves for locking the sleeves inposition on said guide rods.

7. An oil burner positioning system according to claim 6 furthercomprising:

flexible tubing connectedtosaid oil feed system; and vanes arranged in acone shape and connected to said barrel piece with said igniter tipaxially displaced from the apex of said cone.

8. An oil burner positioning system according to claim 7 wherein saidvanes are connected to said barrel piece and said flexible tubing isconnected to said oil feed system so that operation of said bell cranklever linkage moves said tubing and said vanes, with said vanes movingalong the axial direction of said barrel piece.

1. An oil burner positioning apparatus comprising: an igniter tip; abarrel piece connected to said igniter tip; an oil feed system connectedto said barrel piece; a bell crank lever linkage mechanism connected tosaid oil feed system for moving said igniter tip, said barrel piece andsaid oil feed system along the axial direction of said barrel piece; atubular piece having said barrel piece slidably mounted within; and afireproof door having an opening with said tubular piece mounted withinsaid opening; wherein said bell crank lever mechanism further includes abell crank lever having an end connected to said oil feed system; a barhaving a first and second end with said first end connected to thefulcrum of said bell crank lever; and a support connected to the secondend of said bar and said fireproof door.
 2. An oil burner positioningapparatus according to claim 1 wherein said bar is rotatably connectedto both the fulcrum of said bell crank lever and said support.
 3. An oilburner positioning apparatus according to claim 2 wherein said end ofsaid bell crank lever is rotatably attached to said oil feed system. 4.An oil burner positioning apparatus according to claim 3 wherein saidsupport is rigidly connected to said fireproof door.
 5. An oil burnerpositioning system according to claim 4 further comprising: a pair ofguide rods having their axial directions parallel to said barrel pieceslidably connected to a pair of sleeves on said oil feed system andrigidly connected to said door, said guide rods having indicating marksto show the location of said igniter tip.
 6. An oil burner positioningsystem according to claim 5 further comprising: a pair of wing nutsconnected to said sleeves for locking the sleeves in position on saidguide rods.
 7. An oil burner positioning system according to claim 6further comprising: flexible tubing connected to said oil feed system;and vanes arranged in a cone shape and connected to said barrel piecewith said igniter tip axially displaced from the apex of said cone. 8.An oil burner positioning system according to claim 7 wherein said vanesare connected to said barrel piece and said flexible tubing is connectedto said oil feed system so that operation of said bell crank leverlinkage moves said tubing and said vanes, with said vanes moving alongthe axial direction of said barrel piece.